A139227 Array read by rows: row n lists the proper divisors of n-th Fibonacci number A000045(n).

1, 1, 1, 1, 2, 4, 1, 1, 3, 7, 1, 2, 17, 1, 5, 11, 1, 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 1, 1, 13, 29, 1, 2, 5, 10, 61, 122, 305, 1, 3, 7, 21, 47, 141, 329, 1, 1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292

Offset: 3

Author

Omar E. Pol, Apr 28 2008

Keywords

• easy
• nonn
• tabl

Examples

			Row ....... Array begins
===========================================================
3 ......... 1
4 ......... 1
5 ......... 1
6 ......... 1, 2, 4
7 ......... 1
8 ......... 1, 3, 7
9 ......... 1, 2, 17
10 ........ 1, 5, 11
11 ........ 1
12 ........ 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72
13 ........ 1
		

Crossrefs

Cf. A000045, A133021, A139044, A139045.

Programs

Mathematica

f[n_] := Most@ Divisors@ Fibonacci@ n; Flatten@ Array[f, 16, 3] (* Robert G. Wilson v *)